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Information × Registration Number 0221U101278, 0116U007011 , R & D reports Title Research of architectural solutions of 5th generation mobile communication systems creations popup.stage_title Head Kravchuk Serhii O, Registration Date 18-01-2021 Organization Public organization organization of veterans and graduates of the Institute of Energy Conservation and Energy Management of the National Technical University of Ukraine "Kyiv Polytechnic Institute named after Igor Sikorsky" popup.description2  New mathematical models and regularities of procedural, structural and system solutions have been developed, taking into account the impact on the characteristics of the system of time-varying radio channel with fading, traffic resource constraints, as well as the ability to support various radio technologies at the subscriber access level. A new cooperative retransmission scheme has been developed without supporting a direct connection between the source and destination receiver terminals. mathematical models of a number of cooperative relay schemes, which make it possible to outline the main radio characteristics of circuits (SNR, BER and C). Based on the developed mathematical models, modeling of the characteristics of traditional and proposed cooperative retransmission schemes is carried out. An algorithm for selecting the "best" ralay for wireless networks with cooperative relay is proposed, which takes into account a number of criteria (repeater position, bit error rate, power consumption in relay nodes), which reduces path losses and shading effect Product Description popup.authors Afanasieva Liana O Kaidenko Mykola М Kravchuk Iryna M. Minochkin Dmytro А Roskoshnyi Dmytro V popup.nrat_date 2021-01-18 Close